[vince1]

Looks to me like the belt speed stays the same from the one to the other. Generator speed or RPMs would be about twice as fast as the other pulleys depending upon the ratio of the diameters but the big pulleys would run approximately the same depending upon the ratio of their diameters. The bearing or bushing life of the generator might be shortened a bit though. Double crank pulley direct to the pump might be better if you could find one..